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41594B 数据表(PDF) 93 Page - Microchip Technology |
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41594B 数据表(HTML) 93 Page - Microchip Technology |
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93 / 372 page  2011-2012 Microchip Technology Inc. Preliminary DS41594B-page 93 PIC12LF1840T48A REGISTER 10-1: WDTCON: WATCHDOG TIMER CONTROL REGISTER U-0 U-0 R/W-0/0 R/W-1/1 R/W-0/0 R/W-1/1 R/W-1/1 R/W-0/0 — — WDTPS4 WDTPS3 WDTPS2 WDTPS1 WDTPS0 SWDTEN bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ u = Bit is unchanged x = Bit is unknown -m/n = Value at POR and BOR/Value at all other Resets ‘1’ = Bit is set ‘0’ = Bit is cleared bit 7-6 Unimplemented: Read as ‘0’ bit 5-1 WDTPS<4:0>: Watchdog Timer Period Select bits Bit Value = Prescale Rate 00000 = 1:32 (Interval 1 ms typ) 00001 = 1:64 (Interval 2 ms typ) 00010 = 1:128 (Interval 4 ms typ) 00011 = 1:256 (Interval 8 ms typ) 00100 = 1:512 (Interval 16 ms typ) 00101 = 1:1024 (Interval 32 ms typ) 00110 = 1:2048 (Interval 64 ms typ) 00111 = 1:4096 (Interval 128 ms typ) 01000 = 1:8192 (Interval 256 ms typ) 01001 = 1:16384 (Interval 512 ms typ) 01010 = 1:32768 (Interval 1s typ) 01011 = 1:65536 (Interval 2s typ) (Reset value) 01100 = 1:131072 (217) (Interval 4s typ) 01101 = 1:262144 (218) (Interval 8s typ) 01110 = 1:524288 (219) (Interval 16s typ) 01111 = 1:1048576 (220) (Interval 32s typ) 10000 = 1:2097152 (221) (Interval 64s typ) 10001 = 1:4194304 (222) (Interval 128s typ) 10010 = 1:8388608 (223) (Interval 256s typ) 10011 = Reserved. Results in minimum interval (1:32) • • • 11111 = Reserved. Results in minimum interval (1:32) bit 0 SWDTEN: Software Enable/Disable for Watchdog Timer bit If WDTE<1:0> = 00: This bit is ignored. If WDTE<1:0> = 01: 1 = WDT is turned on 0 = WDT is turned off If WDTE<1:0> = 1x: This bit is ignored. |
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